A lot of apes walk on their knuckles. Gorillas, chimpanzees and bonobos use their knuckles for stability and balance.

Nanda Grow.

That’s what I found out from my friend Nanda Grow, an anthropologist and wildlife biologist at Washington State University who studies primates.

“Gorillas and chimpanzees both do knuckle walking, but they do different kinds,” she said.

Whether primates are swinging, jumping, running, skipping, knuckle-walking or walking upright, every species knows just the right way to get from one place to the next.

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Dr. Universe